CCS/PROCESSOR-SDK-AM335X: AM335x RTOS USB Full Speed

dong hyun kim

Tool/software: Code Composer Studio

Hello,

I am using tirtos 6.01.00.08, I want to set USB as full speed.

I searched the forum, and I found USB BCD Code changes from 0x200 to 0x110 and HWREGB(0x47401401) bit 5 must be cleared.

I usbMSC example, it works when I use High speed, but It fails when I use Full-speed.

I also checked HWREGB(0x47401401) value, it changed as the following sequence when it plugging the connector

0x50, 0x40, 0x48, 0x40, 0x48, 0x40, 0x48, 0x40

In Windows 7, it fails. but in Windows 10 it works sometimes but the detection takes long time.

I attached usbMon log files.

Is there any changes needed for usb Full Speed?

Best regards

Kim

Fullscreen usb110.htm Download

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<p class="st00">000016: PnP Event: Device Connected (UP), 2020-11-06 10:33:37.3250737 +81.1409282 (1. Device: Unknown)
<span class="st01">The USB device has just been connected to the system.</span></p>
<p class="st00">000017: Get Descriptor Request (DOWN), 2020-11-06 10:33:37.3250946 +0.0000209 (1. Device: Unknown)
<span class="st01">Descriptor Type: Device
Descriptor Index: 0x0
Transfer Buffer Size: 0x12 bytes
</span></p>
<p class="st00">000018: Control Transfer (UP), 2020-11-06 10:33:37.3252974 +0.0002028. (1. Device: Unknown) Status: 0x00000000
<span class="st01">Pipe Handle: Control Pipe</span></p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 12 01 10 01 00 00 00 40 BE 1C 05 00 00 02 01 02
 03 01</pre></td>
<td valign="top" class="st02"><pre>.......@?.......
..</pre></td></tr></table>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 01 00 00 12 00</pre></td>
<td valign="top" class="st02"><pre>.......</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x100
Index: 0x0
Length: 0x12</p>
<p class="st00">000019: Get Descriptor Request (DOWN), 2020-11-06 10:33:37.3253216 +0.0000242 (1. Device: Unknown)
<span class="st01">Descriptor Type: Configuration
Descriptor Index: 0x0
Transfer Buffer Size: 0x9 bytes
</span></p>
<p class="st02"></p>
<p class="st00">000020: Control Transfer (UP), 2020-11-06 10:33:37.3255419 +0.0002203. (1. Device: Unknown) Status: 0x00000000
<span class="st01">Pipe Handle: Control Pipe</span></p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 09 02 20 00 01 01 00 C0 FA</pre></td>
<td valign="top" class="st02"><pre>.. ....저.</pre></td></tr></table>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 02 00 00 09 00</pre></td>
<td valign="top" class="st02"><pre>.......</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x200
Index: 0x0
Length: 0x9</p>
<p class="st00">000021: Get Descriptor Request (DOWN), 2020-11-06 10:33:37.3255540 +0.0000121 (1. Device: Unknown)
<span class="st01">Descriptor Type: Configuration
Descriptor Index: 0x0
Transfer Buffer Size: 0x20 bytes
</span></p>
<p class="st02"></p>
<p class="st00">000022: Control Transfer (UP), 2020-11-06 10:33:37.3257922 +0.0002382. (1. Device: Unknown) Status: 0x00000000
<span class="st01">Pipe Handle: Control Pipe</span></p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 09 02 20 00 01 01 00 C0 FA 09 04 00 00 02 08 06
 50 00 07 05 81 02 00 02 00 07 05 02 02 00 02 00
</pre></td>
<td valign="top" class="st02"><pre>.. ....저........
P...?...........
</pre></td></tr></table>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 02 00 00 20 00</pre></td>
<td valign="top" class="st02"><pre>..... .</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x200
Index: 0x0
Length: 0x20</p>
<p class="st00">000023: Get Descriptor Request (DOWN), 2020-11-06 10:33:37.3257967 +0.0000045 (1. Device: Unknown)
<span class="st01">Descriptor Type: String
Descriptor Index: 0x0
Transfer Buffer Size: 0x2 bytes
LanguageId: 0x0</span></p>
<p class="st02"></p>
<p class="st00">000024: Control Transfer (UP), 2020-11-06 10:33:37.3259165 +0.0001198. (1. Device: Unknown) Status: 0xc0000012
<span class="st01">Pipe Handle: Control Pipe</span></p>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 03 00 00 02 00</pre></td>
<td valign="top" class="st02"><pre>.......</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x300
Index: 0x0
Length: 0x2</p>
<p class="st01"></p>
<p class="st00">000025: Get Descriptor Request (DOWN), 2020-11-06 10:33:37.3259419 +0.0000254 (1. Device: Unknown)
<span class="st01">Descriptor Type: String
Descriptor Index: 0x0
Transfer Buffer Size: 0x2 bytes
LanguageId: 0x0</span></p>
<p class="st01"></p>
<p class="st00">000026: Control Transfer (UP), 2020-11-06 10:33:42.3203500 +4.9944081. (1. Device: Unknown) Status: 0xc0010000
<span class="st01">Pipe Handle: Control Pipe</span></p>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 03 00 00 02 00</pre></td>
<td valign="top" class="st02"><pre>.......</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x300
Index: 0x0
Length: 0x2</p>
<p class="st01"></p>
<p class="st00">000027: Get Descriptor Request (DOWN), 2020-11-06 10:33:42.3203600 +0.0000100 (1. Device: Unknown)
<span class="st01">Descriptor Type: String
Descriptor Index: 0x0
Transfer Buffer Size: 0x2 bytes
LanguageId: 0x0</span></p>
<p class="st01"></p>
<p class="st00">000028: Control Transfer (UP), 2020-11-06 10:33:47.3278762 +5.0075162. (1. Device: Unknown) Status: 0xc0010000
<span class="st01">Pipe Handle: Control Pipe</span></p>
<p class="st01">Setup Packet</p>
<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td valign="top" class="st02"><pre> 80 06 00 03 00 00 02 00</pre></td>
<td valign="top" class="st02"><pre>.......</pre></td></tr></table>
<p class="st01">Recipient: Device
Request Type: Standard
Direction: Device-&gt;Host
Request: 0x6 (GET_DESCRIPTOR)
Value: 0x300
Index: 0x0
Length: 0x2</p>
<p class="st01"></p>
<p class="st00">000029: Select Configuration (DOWN), 2020-11-06 10:33:47.3281952 +0.0003190 (1. Device: Unknown)
<span class="st01">Configuration Index: 1
</span></p>
<p class="st00">000030: Select Configuration (UP), 2020-11-06 10:33:53.1783283 +0.0000028. (1. Device: Unknown) Status: 0xc0002000
<span class="st01">Configuration Index: 1
Configuration Handle: 0x0</span></p>
<p class="st00">000031: PnP Event: Device Disconnected (UP), 2020-11-06 10:33:53.1793316 +0.0010033 (1. Device: Unknown)
<span class="st01">The USB device has just been removed from the system, all drivers unloaded.</span></p>
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usb200.htm

over 5 years ago

0 Frank Livingston over 5 years ago

TI__Mastermind 30058 points

Hi,

Please see: https://e2e.ti.com/support/processors/f/791/p/954275/3527479#3527479

Regards,
Frank

0 dong hyun kim1 over 5 years ago in reply to Frank Livingston

Prodigy 20 points

Hi, Frank

Many thanks for your reply!

I searched the forum, does the changes for the full-speed only apply to Linux?

also, the old startware seems only support the full-speed USB?

am I right?

I tried to find the old startware, but I can find the version Startware_v2.0.0.04.

How can I get the version supports full-speed?

If it supports devMsc, it will suffice to me.

Best regards,

Kim

0 Frank Livingston over 5 years ago in reply to dong hyun kim1

TI__Mastermind 30058 points

Hi Kim,

dong hyun kim1 said:
does the changes for the full-speed only apply to Linux?

I've looped in a colleague who should be able to answer this.

dong hyun kim1 said:
the old startware seems only support the full-speed USB?

I don't know since I'm not familiar with the feature set of the old Starterware.

dong hyun kim1 said:
I tried to find the old startware, but I can find the version Startware_v2.0.0.04.

I see version 2.00.01.01 can be downloaded here: https://software-dl.ti.com/dsps/dsps_public_sw/am_bu/starterware/latest/index_FDS.html

Please note we no longer provide support for this older version of Starterware.

dong hyun kim1 said:
How can I get the version supports full-speed?

If you require RTOS then you'll need to modify the existing USB LLD & MSC code. If Linux meets your needs then that might be your best option.

Regards,
Frank

0 Bin Liu over 5 years ago in reply to Frank Livingston

TI__Guru**** 177121 points

Hi Kim,

Frank Livingston said:

dong hyun kim1

does the changes for the full-speed only apply to Linux?

I've looped in a colleague who should be able to answer this.

I don't see any change referred in this thread. Can you please elaborate which change you talk about ?

0 Bin Liu over 5 years ago in reply to Frank Livingston

TI__Guru**** 177121 points

Kim,

If you meant the change in the following link, it describes how the USB controller works, so it is applicable to any software.

https://e2e.ti.com/support/processors/f/791/p/601673/2214665#2214665

0 dong hyun kim over 5 years ago in reply to Bin Liu

Prodigy 40 points

Hello,

Frank

I already tried the above link.

If I change BCDUSB code, RTOS usb driver automatically clears HSENAB bit 5.

HSENAB register address is 0x47401401, which is why i mentioned HWREGB(0x47401401) at first time.

I also checked HWREGB(0x47401401) bit4 (USB is negotiated as full-speed)

I also found "Max_packet_size" of usb driver is always set to 512 bytes,

for Full-speed operation, I must be changed it to 64 bytes.

After changes,

in CDC RTOS example, it works as full-speed,

but USB_DevMsc_mmcsd_evmAM335x RTOS example, it has a configure descriptor error.

Odd thing is when I compiled usb_drv as debug mode, I hardly recognized.

but when I compiled usb_drv as release mode, I never recognized.

Best regards,

Kim

0 Frank Livingston over 5 years ago in reply to dong hyun kim

TI__Mastermind 30058 points

Hi Kim,

I don't have any comments regarding these modifications or observations, and I can't provide ongoing support for modifications to the PRSDK drivers.

Regards,
Frank

0 dong hyun kim over 5 years ago in reply to Frank Livingston

Prodigy 40 points

Hi Frank,

I see what you mean.

Is there any plan for the support of the dual speed?

USB spec recommends that the high speed device also support the full speed too.

Regards,

Kim

0 Frank Livingston over 5 years ago in reply to dong hyun kim

TI__Mastermind 30058 points

Hi Kim,

dong hyun kim said:
Is there any plan for the support of the dual speed?

I'm unaware of any plan. I'll ask the development team whether this feature can be added in a future release.

Regards,
Frank

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CCS/PROCESSOR-SDK-AM335X: AM335x RTOS USB Full Speed